Winker for a motorcycle



FIG. 1 is a front elevation view of winker for a motorcycle, showing our new design;

FIG. 2 is a rear elevation view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view of thereof;

FIG. 5 is a right side elevation view thereof;

FIG. 6 is a left side elevation view thereof;

FIG. 7 is a perspective view 1 thereof; and,

FIG. 8 is a perspective view 2 thereof. 

The ornamental design for, winker for a motorcycle, as shown and described. 